ZyXEL U-1496S Plus User Guide - Page 96
At+fclass=2
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AT+VTX ---> Try to handshake Fax mode Switch to fax mode and answer fax call ... 6. Answering machine (Data call). DTE ----------AT+FCLASS=8 DCE OK comments Switch to voice mode AT+VSM=? ---> 1;CELP;1;0;(9600) 2;ADPCM;2;0;(9600) 3;ADPCM;3;0;(9600)
AT+VTX
--->
Start to play greeting message
<---
CONNECT
<DATA>
--->
<---
<DLE>c
T.30 fax calling tone detected
or
or
<DLE>5
DTMF digit '5' detected
<DATA>
--->
<DLE><ETX>
--->
<---
VCON
Return to command state
AT+FCLASS=2
--->
Try to handshake Fax mode
<---
OK
ATA
--->
Switch to fax mode and answer fax call ...
6. Answering machine (Data call).
DTE
DCE
comments
-----------
------
-------------
--------------------
AT+FCLASS=8
--->
Switch to voice mode
<---
OK
AT+VSM=?
--->
1;CELP;1;0;(9600)
2;ADPCM;2;0;(9600)
3;ADPCM;3;0;(9600)
<---
OK
AT+VSM=1
--->
Select CELP compression method
<---
OK
AT+VLS=2
--->
Connect to line
<---
VCON
AT+VTX
--->
Start to play greeting message
<---
CONNECT
<DATA>
--->
<DLE><ETX>
--->
<---
VCON
Return to command state
AT+VRX
--->
Start to record
<---
CONNECT
<---
<DATA>
<---
<DLE>s
DCE detects silence
AT
--->
Stop recording
<---
<DATA>
DCE deliver remaining data
<---
<DLE><ETX>
<---
VCON
return to command state (DTE delete this
silence file)
AT+FCLASS=0
--->